Sounds like you have a campaign that runs to timestamp the date that a record reached 50 points (HOT date). However, your Hot Date field is being marked NULL when the prospects information is captured and they are no longer anonymous.

Any reason not to just set the timestamp again on the date that the prospect is no-longer anonymous if their score is greater than 50? The lead isn't really HOT until you know who they are, so not sure what value you get in knowing someone is HOT before you have their information. Just a simple idea, but will append the field and shouldn't be that far off from the HOT lead date.

Clear clarify and hopefully we can help with the use of Google Translate.

to whom it may concernI'm running a smart campaign with a score of 50 points HOT and recording the HOT lead date,At the anonymous time more than 50 points HOT date was recorded, the lead became named, now HOT day is null.The above data value change is not seen on the activity log.As a possibility, it may have been processed after the merge "type of activity: merge customers"I thought, could you teach me?▼ Target leadhttps://app-sj21.marketo.com/leadDatabase/loadLeadDetail?leadId=327688#By the way, it is not named from anonymous,Merge processing is running similarly in the following leads, and the record on HOT date has disappeared.▼ Test Leadhttps://app-sj21.marketo.com/leadDatabase/loadLeadDetail?leadId=69247Although I am very sorry that I am busy,Humbly, thank you for your understanding.